<template>
    <div class="PostList">
       <!--在数据未返回的时候，显示合格正在加载的gif-->
        <div class="loading" v-if="isLoading">   
             <img src="../assets/1.png">
            
           </div>
           <!--代表我们的主题列表-->
            <div class="posts">
            <ul>
                <li>
                    <div class="toobar">
                        <span>全部</span>
                    <span>精华</span>
                    <span>分享</span>
                    <span>问答</span>
                    <span>招聘</span>
                    </div>
                </li>
              <li  v-for="(post) in posts" :key="post.index">
              <!--头像-->
            <img :src="post.author.avatar_url" alt="">
            <!--回复/浏览-->
             <span>
                 <span class="reply_count">{{post.reply_count}}</span>
               /{{post.visit_count}}
             </span>
             <!--帖子的分类-->
             <span  :class="[{
                 put_good:(post.good ==true),
                 put_top:(post.top == true),
                 'topiclist-tab':(post.good !==true &&post.top !== true)}]">
                 <span>
                     {{post | tebFormatter}}
                 </span>
             </span>
              <!--标题-->
              <router-link  :to="{
              name:'post_content',
              params:{
              id:post.id,
              name:post.author.loginname
              }
              }">
                  <span>
                 {{post.title}}
             </span>
              </router-link >
             
              <!--最终回复时间-->>
             <span class="last_reply">
                 {{post.last_reply_at | formatDate}}
             </span>
                </li>
              <li>

             <pagination @handleList="renderList"></pagination>  
              </li>
            </ul>
        </div>
    </div>
</template>


<script>
import pagination from './Pagination';

export default {
    name:'PostList',
    
    data(){
        return{
            isLoading:false,
            posts:[],//代表页面的列表数组
            postpage:1,
        }
    },
    components:{
    pagination
    },
    
    methods:{
        getData(){
            this.$http.get(' https://cnodejs.org/api/v1/topics',{
            params:{
            page:this.postpage,
            limit:20
            }
            })
            .then(res=>{
    
           this.isLoading =false;  //加载成功去除动画
           this.posts =res.data.data;
         
            })
            .catch(function(err){
                //处理返回失败后的问题
            console.log(err)
        
            })
        },
        renderList(value){
           this.postpage =value;
           this.getData()
        }
    },
    beforeMount(){
   
        this.isLoading =true;  //加载成功之前显示加载动画
       this.getData();   //在页面加载之前获取数据
    }
}

</script>



<style scoped>
 .PostList{
      width: 100%;
    background-color: #e1e1e1;
  }
  .posts {
    margin-top: 10px;
  }

  .PostList img {
    height: 30px;
    width: 30px;
    vertical-align: middle;
  }

  ul {
    list-style: none;
    width: 100%;
    max-width: 1344px;
    margin: 0 auto;
  }

  ul li:not(:first-child) {
    padding: 9px;
    font-size: 15px;
    font-family: "Helvetica Neue", "Luxi Sans", "DejaVu Sans", Tahoma, "Hiragino Sans GB", STHeiti, sans-serif !important;
    font-weight: 400;
    background-color: white;
    color: #333;
    border-top: 1px solid #f0f0f0;
  }

  li:not(:first-child):hover {
    background: #f5f5f5;;
  }

  li:last-child:hover {
    background: white;
  }

  li span {
    line-height: 30px;
  }

  .allcount {
    width: 70px;
    display: inline-block;
    text-align: center;
    font-size: 12px;
  }

  .reply_count {
    color: #9e78c0;
    font-size: 14px;
  }

  .put_good, .put_top {
    background: #80bd01;
    padding: 2px 4px;
    border-radius: 3px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    -o-border-radius: 3px;
    color: #fff;
    font-size: 12px;
    margin-right: 10px;
  }

  .topiclist-tab {
    background-color: #e5e5e5;
    color: #999;
    padding: 2px 4px;
    border-radius: 3px;
    -webkit-border-radius: 3px;
    -moz-border-radius: 3px;
    -o-border-radius: 3px;
    font-size: 12px;
    margin-right: 10px;
  }

  .last_reply {
    text-align: right;
    min-width: 50px;
    display: inline-block;
    white-space: nowrap;
    float: right;
    color: #778087;
    font-size: 12px;
  }

  .toobar {
    height: 40px;
    background-color: #f5f5f5;
  }

  .toobar span {
    font-size: 14px;
    color: #80bd01;
    line-height: 40px;
    margin: 0 10px;
    cursor: pointer;
  }

  .toobar span:hover {
    color: #9e78c0;
  }

  a {
    text-decoration: none;
    color: black;
  }

  a:hover {
    text-decoration: underline;
  }

  .loading {
    text-align: center;
    padding-top: 300px;
  }
</style>